/*
   Copyright The Overlaybd Authors

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

#pragma once
#include <ext2fs/ext2fs.h>
#include <photon/fs/filesystem.h>

#define DEFAULT_BLOCK_SIZE 4096

class IOManager {
public:
    virtual io_manager get_io_manager()=0;
    virtual ~IOManager() {}
};

IOManager *new_io_manager(photon::fs::IFile *file);
photon::fs::IFileSystem *new_extfs(photon::fs::IFile *file, bool buffer = true);

// make extfs on an prezeroed IFile,
// should be truncated to specified size in advance
int make_extfs(photon::fs::IFile *file);
